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Nonconvexity of private capacity and classical environment-assisted capacity of a quantum channel
(American Physical SocietyPhysical Review A, 2016-10-17)
The capacity of classical channels is convex. This is not the case for the quantum capacity of a channel: The capacity of a mixture of different quantum channels exceeds the mixture of the individual capacities and thus ...
Utilising optimised operators and distillation to extract scattering phase shifts
(Proceedings of Science, 2016-01-01)
In this investigation, we examine how the precision of energy spectra and scattering phase shifts, extracted in lattice QCD, depend upon the degree of distillation type smearing. We use the variational method to extract ...
Non-diagonal four-dimensional cohomogeneity-one Einstein metrics in various signatures
(ElsevierDifferential Geometry and its Application, 2016-11-11)
Most known four-dimensional cohomogeneity-one Einstein metrics are diagonal in a basis defined by the left-invariant one-forms, though some essentially non-diagonal ones are known. We consider the problem of explicitly ...
Classical and quantum solutions in Brans-Dicke cosmology with a perfect fluid
(American Physical SocietyPhysical Review D, 2016)
We consider the application of group invariant transformations in order to constrain a flat isotropic and homogeneous cosmological model, containing of a Brans-Dicke scalar field and a perfect fluid with a constant equation ...
Distinguishing black-hole spin-orbit resonances by their gravitational wave signatures. II: Full parameter estimation
(American Physical Society, 2016)
Gravitational waves from coalescing binary black holes encode the evolution of their spins prior to merger. In the post-Newtonian regime and on the precession timescale, this evolution has one of three morphologies, with ...
Slender-ribbon theory
(American Institute of PhysicsPhysics of Fluids, 2016-01-11)
Ribbons are long narrow strips possessing three distinct material length scales (thickness, width, and length) which allow them to produce unique shapes unobtainable by wires or filaments. For example, when a ribbon has ...
Evaporation effects in elastocapillary aggregation
(Cambridge University PressJournal of Fluid Mechanics, 2016)
We consider the effect of evaporation on the aggregation of a number of elastic objects due to a liquid’s surface tension. In particular, we consider an array of spring–block elements in which the gaps between blocks are ...
End point of Black Ring Instabilities and the Weak Cosmic Censorship Conjecture
(American Physical SocietyPhysical Review Letters, 2016-02-18)
We produce the first concrete evidence that violation of the weak cosmic censorship conjecture can occur in asymptotically flat spaces of five dimensions by numerically evolving perturbed black rings. For certain thin ...